Product Features:
l Up to 25.7813Gbps Data Links;
l 850nm VCSEL laser transmitter and PIN/TIA receiver;
l Maximum link length of 100m on OM4 MMF;
l Hot-pluggable SFP+ footprint;
l Power consumption less than 1W;
l RoHS compliant and lead-free;
l Support Digital Diagnostic Monitor interface;
l +3.3V Single power supply;
l Case operating temperature;
Commercial: 0°C to +70°C
I. Pin Diagram
Pinout of Connector Block on Host Board
II. Pin Descriptions
Pin | Symbol | Name/Description | Ref. |
1 | V EET | Transmitter Ground (Common with Receiver Ground) | 1 |
2 | T FAULT | Transmitter Fault. | 2 |
3 | T DIS | Transmitter Disable. Laser output disabled on high or open. | 3 |
4 | SDA | 2-wire Serial Interface Data Line | 4 |
5 | SCL | 2-wire Serial Interface Clock Line | 4 |
6 | MOD_ABS | Module Absent. Grounded within the module | 4 |
7 | RS0 | No connection required | |
8 | LOS | Loss of Signal indication. Logic “0” indicates normal operation. | 5 |
9 | RS1 | No connection required | |
10 | V EER | Receiver Ground (Common with Transmitter Ground) | 1 |
11 | V EER | Receiver Ground (Common with Transmitter Ground) | 1 |
12 | RD- | Receiver Inverted DATA out. AC Coupled | |
13 | RD+ | Receiver Non-inverted DATA out. AC Coupled | |
14 | V EER | Receiver Ground (Common with Transmitter Ground) | 1 |
15 | V CCR | Receiver Power Supply | |
16 | V CCT | Transmitter Power Supply | |
17 | V EET | Transmitter Ground (Common with Receiver Ground) | 1 |
18 | TD+ | Transmitter Non-Inverted DATA in. AC Coupled. | |
19 | TD- | Transmitter Inverted DATA in. AC Coupled. | |
20 | V EET | Transmitter Ground (Common with Receiver Ground) | 1 |
Notes:
1. Circuit ground is internally isolated from chassis ground.
2. TFAULT is an open collector/drain output, which is pulled up with a 4.7kΩ – 10kΩ resistor on the
host board, but is grounded inside the SFP+ cable plug.
3. Laser output disabled on TDIS >2.0V or open, enabled on TDIS <0.8V.
4. Should be pulled up with 4.7kΩ – 10kΩ on host board to a voltage between 2.0V and 3.6V.
MOD_ABS pulls line low to indicate module is plugged in.
5. LOS is open collector output. Should be pulled up with 4.7kΩ – 10kΩ on host board to a voltage
between 2.0V and 3.6V. Logic 0 indicates normal operation; logic 1 indicates loss of signal.
III. Absolute Maximum Ratings
Parameter | Symbol | Min | Type | Max | Unit | Ref. |
Maximum Supply Voltage | Vcc | -0.5 | 3.6 | V | ||
Storage Temperature | TS | -40 | 85 | ℃ | 1 | |
Case Operating Temperature | TOP | 0 | 70 | ℃ % | ||
Relative Humidity | RH | 0 | 85 | 2 |
Notes:
1.Limited by the fiber cable jacket, not the activeends.
2.Non-condensing
IV. Electrical Characteristics (TOP = 0°C to 70°C, VCC = 3.3 ± 5% Volts)
Parameter | Symbol | Min | Type | Max | Unit | Ref. |
Supply Voltage | Vcc | 3.15 | 3.45 | V | ||
Supply Current | Icc | 300 | mA | |||
Transmitter | ||||||
Input differential impedance | Rin | 100 | Ω | 1 | ||
Differential data input swing | Vin,pp | 200 | 1000 | mV | ||
Transmit Disable Voltage | VD | 2 | VCC | V | ||
Transmit Enable Voltage | VEN | Vee | Vee+0.8 | V | ||
Receiver | ||||||
Differential data output swing | Vout,pp | 200 | 100 | mV | 2 | |
LOS Fault | VLOS_fault | 2 | VccHOST | V | 3 | |
LOS Normal | VLOS_norm | Vee | Vee+0.8 | V | 3 | |
Power Supply Noise Tolerance | VCCT/VCCR | Per SFF-8431 Rev 4.1 | mVpp | 4 | ||
Notes:
1.Connected directly to TX data input pins.AC coupling from pins into laser driver IC.
2.Into 100Ω differential termination。
3.20-80%.Measured with Module Compliance Test Board and OMA test pattern. Use of four 1’s and four 0’s in sequence in the PRBS^9 is an acceptable alternative. SFF-8431 Rev 4.1
4. LOS is an open collector output. Should be pulled up with 4.7kΩ – 10kΩ on the host board. Normal operation is logic 0; loss of signal is logic 1. Maximum pull-up voltage is 5.5V.
5. Testing methodology per SFF-8431. Rev 4.1
V. Digital Diagnostic Memory Map
VI. Digital Diagnostic Monitoring Information
Parameter | Unit | Accuracy |
Case Temperature | ℃ | ±3 |
Supply Voltage | V | ±3% |
Tx Bias Current | mA | ±10% |
Tx Optical Power | dB | ±3 |
Rx Optical Power | dB | ±3 |
VII. Recommended Interface Circuit
VIII. Mechanical Dimensions
SFP wire mechanical drawing (Unit: mm)
Product Features
l Up to 25.7813Gbps Data Links
l 850nm VCSEL laser transmitter and PIN/TIA receiver
l Maximum link length of 100m on OM4 MMF
l Hot-pluggable SFP+ footprint
l Power consumption less than 1W
l RoHS compliant and lead-free
l Support Digital Diagnostic Monitor interface
l +3.3V Single power supply
l Case operating temperature
Commercial: 0°C to +70°C
Applications | Compliance |
25GBASE-SR Ethernet | SFP+ MSA. |
SFP+ SFF-8431 and SFF-8432. | |
RoHS |
Ordering Information
Package | Product part NO. | Distance | Temperature Range |
SFP28 | FSJMAA31-L03C | 0.3-metercable | Commercial:0~70℃ |
SFP28 | FSJMAA31-M01C | 1-metercable | Commercial:0~70℃ |
SFP28 | FSJMAA31-M03C | 3-metercable | Commercial: 0~70℃ |
SFP28 | FSJMAA31-M05C | 5-metercable | Commercial: 0~70℃ |
SFP28 | FSJMAA31-M06C | 6-metercable | Commercial: 0~70℃ |
SFP28 | FSJMAA31-M10C | 10-metercable | Commercial: 0~70℃ |
SFP28 | FSJMAA31-M15C | 15-metercable | Commercial: 0~70℃ |
SFP28 | FSJMAA31-M20C | 20-metercable | Commercial: 0~70℃ |
SFP28 | FSJMAA31-M25C | 25-metercable | Commercial: 0~70℃ |
SFP28 | FSJMAA31-M30C | 30-metercable | Commercial: 0~70℃ |
SFP28 | FSJMAA31-M50C | 50-metercable | Commercial: 0~70℃ |
SFP28 | FSJMAA31-S10C | 100-metercable | Commercial: 0~70℃ |
*For availability of additional cable lengths, please contact Fibridge. | |||